Ollama / Ollama

Ollama Launch Claude — API Error 400 with CLAUDE_CODE_USE_BEDROCK Conflict

Fix ollama launch claude failing with 400 error when CLAUDE_CODE_USE_BEDROCK is set Includes evidence for Ollama troubleshooting demand.

Source-backed Last updated May 12, 2026 1 source Needs local verification

Category: Ollama
Error signature: API Error (model_name): 400 The provided model identifier is invalid.
Quick fix: Compare the failing environment with a known working setup, then change one configuration value at a time.
Updated: May 12, 2026
Verification status: Source-backed
Evidence: 1 public source URL

Before you change production

This page includes public source URLs in the imported troubleshooting record. Compare those references with your version and environment before applying changes.

Reproduce the smallest failing action and save non-secret logs before changing configuration.
Check versions for Ollama, related SDKs, package managers, CI runners, and hosting providers.
Change one setting or dependency at a time, then rerun the same failing command or request.
Avoid destructive commands, credential rotation, billing changes, or security relaxations without a rollback plan.

What this error means

API Error (model_name): 400 The provided model identifier is invalid. is a Ollama failure pattern reported for developers trying to fix ollama launch claude failing with 400 error when claude_code_use_bedrock is set. Based on the imported evidence, treat this as a tool-specific troubleshooting page rather than a generic API error.

Why this happens

Official Ollama issue #16097 (2026-05-11) documents that ollama launch claude fails with 400 API Error when user has CLAUDE_CODE_USE_BEDROCK=1 in Claude Code settings.json. Bedrock rejects the local Ollama model name.

Common causes

Developers trying to use ollama launch claude with local models hit a 400 error because Claude Code's Bedrock routing overrides the Ollama model name. This is a cross-tool integration failure affecting users of both Ollama and Claude Code simultaneously.
Official Ollama issue #16097 (2026-05-11) documents that ollama launch claude fails with 400 API Error when user has CLAUDE_CODE_USE_BEDROCK=1 in Claude Code settings.json. Bedrock rejects the local Ollama model name.

Quick fixes

Confirm the exact error signature matches API Error (model_name): 400 The provided model identifier is invalid..
Check the Ollama account, local tool state, and provider configuration involved in the failing workflow.
Compare the failing environment with a known working setup, then change one configuration value at a time.

Platform/tool-specific checks

Verify the command, editor, extension, or API client that produced the error.
Compare local settings with CI, deployment, or editor-level settings when the error appears in only one environment.
Avoid deleting credentials, local model data, or project settings until the failing scope is clear.

Step-by-step troubleshooting

Capture the exact error message and the command, editor action, or request that triggered it.
Check whether the failure is account/auth, quota/rate, model/provider, local runtime, or deployment configuration.
Review the source evidence below and compare it with your environment.
Apply one change at a time and rerun the smallest failing action.
Keep the working fix documented for the team or deployment environment.

How to prevent it

Keep provider/tool configuration documented.
Record non-secret diagnostics such as tool version, provider name, model name, and command path.
Add a lightweight check before CI or production workflows depend on the tool.

Diagnostic flow for this page

Match API Error (model_name): 400 The provided model identifier is invalid. exactly before applying the quick fix.
Compare the failing environment with Ollama versions, account scope, provider settings, and deployment context.
Check the listed common causes in order, starting with the cause that best matches your logs.
Use the evidence status below to decide whether to confirm against public sources or official documentation.
Apply one reversible change, rerun the smallest failing action, and keep rollback notes.

FAQ

What does API Error (model_name): 400 The provided model identifier is invalid. mean in Ollama?

API Error (model_name): 400 The provided model identifier is invalid. indicates the workflow described by "Ollama Launch Claude — API Error 400 with CLAUDE_CODE_USE_BEDROCK Conflict" failed in a Ollama context. Start by confirming the exact signature and the component that emitted it.

What should I check first for API Error (model_name): 400 The provided model identifier is invalid.?

Check whether this cause matches your environment: Developers trying to use ollama launch claude with local models hit a 400 error because Claude Code's Bedrock routing overrides the Ollama model name. This is a cross-tool integration failure affecting users of both Ollama and Claude Code simultaneously.

Is the API Error (model_name): 400 The provided model identifier is invalid. guidance source-backed?

The "Ollama Launch Claude — API Error 400 with CLAUDE_CODE_USE_BEDROCK Conflict" page is labeled source-backed. It has 1 public source URL from github.com, so use that evidence status when deciding how much additional verification you need.

When should I avoid the quick fix for API Error (model_name): 400 The provided model identifier is invalid.?

For "Ollama Launch Claude — API Error 400 with CLAUDE_CODE_USE_BEDROCK Conflict", avoid applying "Compare the failing environment with a known working setup, then change one configuration value at a time." when the error text differs, the affected version or provider is different, or the change would touch credentials, billing, DNS, production deploy settings, or irreversible data.

What should I collect before debugging API Error (model_name): 400 The provided model identifier is invalid.?

For "Ollama Launch Claude — API Error 400 with CLAUDE_CODE_USE_BEDROCK Conflict", collect the failing Ollama command or request, non-secret configuration, versions, timestamps, request IDs when available, and the smallest reproduction that still triggers the signature.